Yamaha YZ 2017 Series, Owner'S Service Manual

Page: 393 / 410

CHASSIS
10-4
TIP
• If the machine is new and after it is broken in,
the same set length of the spring may change
because of the initial fatigue, etc. of the
spring. Therefore, be sure to make reevalua-
tion.
• If the standard figure cannot be achieved by
adjusting the adjuster and changing the set
length, replace the spring with an optional one
and make readjustment.
EASB29B397 SETTING OF SPRING AFTER REPLACE-
MENT
After replacement, be sure to adjust the spring
to the set length [sunken length 90–100 mm
(3.5–3.9 in)] and set it.
1. Use of soft spring
• Adjust to decrease rebound damping force
to compensate for less spring load. Run with
the rebound damping force adjuster one or
two clicks turned out, and readjust it to suit
your preference.
2. Use of stiff spring
• Adjust to increase rebound damping force to
compensate for greater spring load. Run
with the rebound damping force adjuster
one or two clicks turned in, and readjust it to
suit your preference.
TIP
Adjusting the rebound damping force will be fol-
lowed more or less by a change in the com-
pression damping force. For correction, adjust
to decrease compression damping force.
EWA
WARNING
When using a rear shock absorber other
than currently installed, use the one whose
overall length “a” does not exceed the stan-
dard as it may result in faulty performance.
Never use one whose overall length is
greater than standard.
EASB29B398
REAR SHOCK ABSORBER SETTING
PARTS
• Rear shock spring “1”
*For JPN
TIP
• The I.D. mark “a” is marked at the end of the
spring.
• Spring specification varies according to the
color of I.D. marks.
Length “a” of standard shock
462.5 mm (18.21 in)
Type
Spring
rate N/
mm
Part number
I.D.
Mark
STD* 48
2GB-22212-10
(Blue)
Black
50
2GB-22212-00
(Blue)
Green
52
1SL-22212-40
(Blue)
Yellow
54
1SL-22212-60
(Blue)
Pink
STD 56
1SL-22212-20
(Blue)
White
58
1SL-22212-00
(Blue)
Silver
STIFF 60
1SL-22212-80
(Blue)
Brown